The French fashion house took over Hollywood’s Sunset Tower Hotel on Thursday to toast its fragrance with Lily-Rose, daughter of famed actor Depp and French actress-singer Vanessa Paradis, who has been a face of Chanel for 25 years. ­

Lily-Rose, 17, was joined by other young actresses: Rowan Blanchard; Rainey Qualley, the daughter of Andie MacDowell; and Ava Phillippe, the daughter of Reese Witherspoon and Ryan Phillippe.

They mingled with Kristen Stewart, Pharrell Williams — whose wife, Helen, is pregnant with their second child — and famed photographer Mario Testino.

We’re told that Nas was the surprise performer at the soiree, and was so loud that diners, including Chris Rock, Lucy Liu, Maureen Dowd and Sarah Paulson, at the hotel’s Tower Bar could hear the show. “Chris Rock started dancing in his seat by swinging his arms,” a source said.